[Intel-wired-lan] [dev-queue PATCH v2] i40evf: Fix link state event handling.
Sridhar Samudrala
sridhar.samudrala at intel.com
Thu Sep 1 20:27:27 UTC 2016
Currently disabling the link state from PF via
ip link set enp5s0f0 vf 0 state disable
doesn't disable the CARRIER on the VF.
This patch updates the carrier and starts/stops the tx queues based on the
link state notification from PF.
PF: enp5s0f0, VF: enp5s2
#modprobe i40e
#echo 2 > /sys/class/net/enp5s0f0/device/sriov_numvfs
#ip link set enp5s2 up
#ip -d link show enp5s2
175: enp5s2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000
link/ether ea:4d:60:bc:6f:85 brd ff:ff:ff:ff:ff:ff promiscuity 0 addrgenmode eui64
#ip link set enp5s0f0 vf 0 state disable
#ip -d link show enp5s0f0
171: enp5s0f0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/ether 68:05:ca:2e:72:68 brd ff:ff:ff:ff:ff:ff promiscuity 0 addrgenmode eui64 numtxqueues 72 numrxqueues 72 portid 6805ca2e7268
vf 0 MAC 00:00:00:00:00:00, spoof checking on, link-state disable, trust off
vf 1 MAC 00:00:00:00:00:00, spoof checking on, link-state auto, trust off
#ip -d link show enp5s2
175: enp5s2: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000
link/ether ea:4d:60:bc:6f:85 brd ff:ff:ff:ff:ff:ff promiscuity 0 addrgenmode eui64 numtxqueues 16 numrxqueues 16
v2:
Update adapter->link_up when carrier is turned off.
Signed-off-by: Sridhar Samudrala <sridhar.samudrala at intel.com>
---
drivers/net/ethernet/intel/i40evf/i40evf_main.c | 4 ++++
drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c | 10 +++++++---
2 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/intel/i40evf/i40evf_main.c b/drivers/net/ethernet/intel/i40evf/i40evf_main.c
index f751f7b..e0a8cd8 100644
--- a/drivers/net/ethernet/intel/i40evf/i40evf_main.c
+++ b/drivers/net/ethernet/intel/i40evf/i40evf_main.c
@@ -1037,6 +1037,7 @@ void i40evf_down(struct i40evf_adapter *adapter)
netif_carrier_off(netdev);
netif_tx_disable(netdev);
+ adapter->link_up = false;
i40evf_napi_disable_all(adapter);
i40evf_irq_disable(adapter);
@@ -1731,6 +1732,7 @@ static void i40evf_reset_task(struct work_struct *work)
set_bit(__I40E_DOWN, &adapter->vsi.state);
netif_carrier_off(netdev);
netif_tx_disable(netdev);
+ adapter->link_up = false;
i40evf_napi_disable_all(adapter);
i40evf_irq_disable(adapter);
i40evf_free_traffic_irqs(adapter);
@@ -1769,6 +1771,7 @@ continue_reset:
if (netif_running(adapter->netdev)) {
netif_carrier_off(netdev);
netif_tx_stop_all_queues(netdev);
+ adapter->link_up = false;
i40evf_napi_disable_all(adapter);
}
i40evf_irq_disable(adapter);
@@ -2457,6 +2460,7 @@ static void i40evf_init_task(struct work_struct *work)
goto err_sw_init;
netif_carrier_off(netdev);
+ adapter->link_up = false;
if (!adapter->netdev_registered) {
err = register_netdev(netdev);
diff --git a/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c b/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c
index cc6cb30..ddf478d 100644
--- a/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c
+++ b/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c
@@ -898,8 +898,14 @@ void i40evf_virtchnl_completion(struct i40evf_adapter *adapter,
vpe->event_data.link_event.link_status) {
adapter->link_up =
vpe->event_data.link_event.link_status;
+ if (adapter->link_up) {
+ netif_tx_start_all_queues(netdev);
+ netif_carrier_on(netdev);
+ } else {
+ netif_tx_stop_all_queues(netdev);
+ netif_carrier_off(netdev);
+ }
i40evf_print_link_message(adapter);
- netif_tx_stop_all_queues(netdev);
}
break;
case I40E_VIRTCHNL_EVENT_RESET_IMPENDING:
@@ -974,8 +980,6 @@ void i40evf_virtchnl_completion(struct i40evf_adapter *adapter,
case I40E_VIRTCHNL_OP_ENABLE_QUEUES:
/* enable transmits */
i40evf_irq_enable(adapter, true);
- netif_tx_start_all_queues(adapter->netdev);
- netif_carrier_on(adapter->netdev);
break;
case I40E_VIRTCHNL_OP_DISABLE_QUEUES:
i40evf_free_all_tx_resources(adapter);
--
2.5.5
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